//---------------------------------------------------------------------------
//
// PolarDB PX Optimizer
//
//	Copyright (C) 2021, Alibaba Group Holding Limited
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//	@filename:
//		CXformIndexGet2ShareIndexScan.h
//
//	@doc:
//		Transform Index Get to Index Scan
//---------------------------------------------------------------------------
#ifndef GPOPT_CXformIndexGet2ShareIndexScan_H
#define GPOPT_CXformIndexGet2ShareIndexScan_H

#include "gpos/base.h"

#include "gpopt/xforms/CXformImplementation.h"

namespace gpopt
{
using namespace gpos;

//---------------------------------------------------------------------------
//	@class:
//		CXformIndexGet2ShareIndexScan
//
//	@doc:
//		Transform Index Get to Index Scan
//
//---------------------------------------------------------------------------
class CXformIndexGet2ShareIndexScan : public CXformImplementation
{
private:
public:
	CXformIndexGet2ShareIndexScan(const CXformIndexGet2ShareIndexScan &) = delete;

	// ctor
	explicit CXformIndexGet2ShareIndexScan(CMemoryPool *);

	// dtor
	~CXformIndexGet2ShareIndexScan() override = default;

	// ident accessors
	EXformId
	Exfid() const override
	{
		return ExfIndexGet2ShareIndexScan;
	}

	// xform name
	const CHAR *
	SzId() const override
	{
		return "CXformIndexGet2ShareIndexScan";
	}

	// compute xform promise for a given expression handle
	EXformPromise Exfp(CExpressionHandle &	//exprhdl
	) const override;

	// actual transform
	void Transform(CXformContext *pxfctxt, CXformResult *pxfres,
				   CExpression *pexpr) const override;

};	// class CXformIndexGet2ShareIndexScan

}  // namespace gpopt

#endif	// !GPOPT_CXformIndexGet2ShareIndexScan_H

// EOF
